Ventilator valve for windows



Juner 15v 1926.

M. SACHSE VENTILATOR VALVE Foa w'mnows .FiledA .my so. 1925 PatentedJune 15, 1926.,

FATENT QFFICE.

MARTIN SACHSE, 0F RACINE', WISCONSIN.

VENTILATOR VALVE FOR VIINDOWS.

Application filed July 30, 1925.

The invention relates to means tor con.- trolling ventilation of a roomand has tor its object the provision ot a slide valve adapted to beattached to the lower rail of a window sash to control the passage ofair through an opening in the sash.

A further object ot the invention is the provision of a valve comprisinga metal plate having its longitudinal edges bent to form guides andplates slidably mounted in said guides, the meeting edge ot one ci theplates being offset to overlap the meeting edge of the other plate andeach of the plates provided with an offset tongue formed byparallelincisions, said tongues 'forming stops to limit the movement of'the plates.

The construction and operation ci the invention will be describedinfdetail hereinaiter and the construction will be ifound illustrated inthe accompanying Ydrawings in which Figure l is a view in elevation ofthe rear ot the plate,

Figure 2 a front view in elevation showing the plate applied to a windowsash, illustrated tragmentally,

Figure 8 a longitudinal sectional view on a plane indicated by the lineSw?) oi' Figure 2, and

Figure t a transverse sectional view on the plane indicated by the linelf-t of Figure 2.

In the drawings similar reference characters will be used to designatecorresponding parts throughout the several views.

The improved ventilator valve comprisei a plate l having itslongitudinal edges bent back on the plate and spaced therefrom as shownat 2 to form guides to slidably receive the valve plates 3 and Li. rEheouter ends of valve plates 3 and i are bent on themselves, and then atright angles to the planes of the plates as shown at 5 to torni handlesfor the operation ot' the plates in opening and closing them.

The inner edge ot plate fiis oiiset shown at 6 to overlap thecorresponding inner edge ot plate 3 to iorm a substantially air-tight'joint when the plates are in closed position as shown in the drawings.Plate a is also formed with an integral tongue 7 formed by Seria1 No.47,117.

making parallel incisions in the ends of the plate and bending thetongue outwardly from the plate as shown, said tongue serving to engagethe meeting edge of plate 3` when the plates are in a closed position,and also serving as a stop to engage the end of opening 8 in plate l.Plate 3 is also provided with an outwardly projecting tongue 9 con-ystructed similarly to tongue 7 and serving as a stop to limit theoutward movement of plate 3 in opening the plate. As shown in Figure 2the ends oit' the bent back portions 2 .are inclined as shown at l0, andsaid inclmed ends serve as stops to limit the inward movement oitheplate by engaging the angular portions 5.

In use, the device is attached to a window sash, and preferably thelower rail of the sasn as indicated at A, said sash being provided withan elongated opening B corre sponding to the opening 8 in plate l, andplate l is secured to the rail A by means of driven astenings llengaging openings 12 adjacent to the ends of the plates. It will beapparent that when the device is in position as shown in the drawings,plates 3 and 4 may be manipulated to partly or entirely open the passagethrough openings B and 8, or ventilation may be entirely closed byclosing the plates.

What is claimed is z- A ventilator valve adapted to be secured to awindow sash and to control the passage of air through an opening thereincomprising a plate adapted to be secured on a sash and having an openingtherein alined with an opening in the sash, guides on the longitudinaledges ot the plate :tormed by folding said edges, valve plates slidablymounted in said guides, one of said valve plates having its edge meetingthe other plate offset to overlap the adjacentedge of the otherV plate,and each ot' said plates having a tongue cut therefrom by substantiallyparallel incisions and bent outwardly of the plates to provide stops tolimit the movement ot the plates.

In testimony whereof I aiiiX my signature.

MARTIN SACI-ISE.

